/*
 *
 * @APPLE_LICENSE_HEADER_START@
 *
 * Copyright (c) 1999-2008 Apple Inc.  All Rights Reserved.
 *
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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// $Id: QTAtom_tref.h,v 1.1 2006/01/05 13:20:36 murata Exp $
//
// QTAtom_tref:
//   The 'tref' QTAtom class.

#ifndef QTAtom_tref_H
#define QTAtom_tref_H

//
// Includes
#ifndef __Win32__
#include <netinet/in.h>
#endif

#include "QTFile.h"
#include "QTAtom.h"


//
// QTAtom class
class QTAtom_tref : public QTAtom {

public:
    //
    // Constructors and destructor.
                        QTAtom_tref(QTFile * File, QTFile::AtomTOCEntry * Atom,
                               Bool16 Debug = false, Bool16 DeepDebug = false);
    virtual             ~QTAtom_tref(void);


    //
    // Initialization functions.
    virtual Bool16      Initialize(void);
    
    //
    // Accessors.
    inline  UInt32      GetNumReferences(void) { return (UInt32) fNumEntries; }
    inline  Bool16      TrackReferenceToTrackID(UInt32 TrackReference, UInt32 * TrackID = NULL) \
                            {   if(TrackReference < fNumEntries) { \
                                    if( TrackID != NULL ) \
                                        *TrackID = ntohl(fTable[TrackReference]); \
                                    return true; \
                                } else \
                                    return false; \
                            }


    //
    // Debugging functions.
    virtual void        DumpAtom(void);


protected:
    //
    // Protected member variables.
    UInt64      fNumEntries;
    char        *fTrackReferenceTable;
    UInt32      *fTable; // longword-aligned version of the above
};

#endif // QTAtom_tref_H
